Author: Jake Buehler

To serenade with their high-pitched songs, singing mice inflate a throat sac — a use for air sacs seemingly unknown in any other animal.

Some octopuses that lived over 72 million years ago were as long as whales. These huge predators may have been the largest invertebrates ever.

North American sweat bees change color depending on the surrounding humidity. It might be a more widespread phenomenon among insects.